How to open Website url in Other than Iframe?

<iframe id="ifrm1" runat ="server" src="http://dotnetfunda.com/"></iframe>I am open the Website url using frame, this frame not display properly in Some devicess Like(Mobile ,Tablets)Amy other way to display website urls other then Iframe

This code is working for me in HTML pageI am putting this one in ASPX page getting an error like this

ERROR:Compiler Error Message: CS1061: 'ASP.webform13_aspx' does not contain a definition for 'resize_iframe' and no extension method 'resize_iframe' accepting a first argument of type 'ASP.webform13_aspx' could be found (are you missing a using directive or an assembly reference?What is the mistake for this one??